Monday, February 26, 2018
GIS Hub Explorer: Out With the Old, In With the New
Over the past 15 years we have upgraded the GIS Hub Explorer three times to major new versions, and now we are planning to roll out a fourth version. Each of these versions correspond to responding to a shift in technology. This fourth version utilizes Esri's "web application builder" which is their current platform and which also provides a responsive design, allowing the GIS Hub Explorer to work on mobile devices.
If you are still using the old Hub Explorer, please begin to convert over to using the new Hub Explorer. We plan to shut down the old Hub Explorer March 19. If you are right in the middle of a project that uses the old Hub Explorer and you need to continue having access to it past March 19, please contact us at your earliest convenience.
Tuesday, February 20, 2018
North Dakota Watershed Boundary Dataset Update
There have been a few updates to the North Dakota WBD that is distributed on the ND GIS Hub Data Portal. First, the field HULEVEL in the HUC12_Line feature dataset will no longer maintained. This field was only maintained in the state WBD and does not exist in the national WBD. HULEVEL field is similar to the already existing HUDIGIT and conveys similar meaning, specifically what hydrologic unit level the line represents: 10-digit, 12-digit, 4-digit, etc. Below is a table of HUDIGIT labels and values that can be used to symbolize the HUC12_Line feature dataset:
Label Value
12-digit Hydrologic Unit 12
10-digit Hydrologic Unit 10
8-digit Hydrologic Unit 8
6-digit Hydrologic Unit 6
4-digit Hydrologic Unit 4
2-digit Hydrologic Unit 2
14-digit and 16-digit hydrologic units have a value of "14" and "16", respectively and are nested within the 12-digit hydrologic units. However, there are no 14-digit or 16-digit hydrologic units delineated for North Dakota at this time.
Second, some field names have changed slightly from what was on the ND GIS Hub previously to make them consistent with what is in the national WBD. The records contained in these attribute fields remain the same, just the field names have changed. MetasourceID, SourceDataDesc, SourceOriginator, and SourceFeatureID are the fields that now have the same name as the national dataset.
Lastly, linework and coding updates have been made in the following areas:
Label Value
12-digit Hydrologic Unit 12
10-digit Hydrologic Unit 10
8-digit Hydrologic Unit 8
6-digit Hydrologic Unit 6
4-digit Hydrologic Unit 4
2-digit Hydrologic Unit 2
14-digit and 16-digit hydrologic units have a value of "14" and "16", respectively and are nested within the 12-digit hydrologic units. However, there are no 14-digit or 16-digit hydrologic units delineated for North Dakota at this time.
Second, some field names have changed slightly from what was on the ND GIS Hub previously to make them consistent with what is in the national WBD. The records contained in these attribute fields remain the same, just the field names have changed. MetasourceID, SourceDataDesc, SourceOriginator, and SourceFeatureID are the fields that now have the same name as the national dataset.
Lastly, linework and coding updates have been made in the following areas:
- HU12 hydrologic unit lines and codes have been added to the Canadian portion of the Lower Red basin.
- HUC12 linework adjustments have been made near selected confluences across the state to align WBD polygons to NHD streamlines, flowlines and pour points when appropriate.
- Revisions have been made throughout the dataset as part of a nationwide effort to review linework, verify HU codes, downstream codes as well as a comprehensive review of hydrologic unit names to bring older delineations up to the current standards.
Labels:
boundaries,
boundary,
data,
GIS Hub,
HUC,
hydrologic,
water,
watershed,
WBD
Friday, February 16, 2018
Updated Datasets on the GIS Hub
Two datasets have been updated on the GIS Hub by the North Dakota GIS Technical Committee data stewards. These are:
City Boundaries (updated, courtesy of Department of Transportation)
Watershed Boundary Dataset (updated, includes watersheds, sub-watersheds, regions, sub-regions, basins, and sub-basins; courtesy of Department of Health) NOTE: please read the detailed description.
These datasets can be downloaded and/or delivered via web-based data services. More information on these datasets can be found on the GIS Hub Data Portal. You can search for these datasets (e.g., type in: watershed) or you may find it convenient to simply browse to the data using the Topics filter.
After you've located the data of interest, click on the title of the dataset and then click on a button to the right of the data resource, e.g., the "Go to resource" button.
Labels:
boundaries,
cities,
city,
data,
DOT,
Health,
water GIS Hub,
watershed,
WBD
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